MinGW and std::thread

Question

So I've been trying to get the following code to compile and run on Windows by using a MinGW compiler.

#include <iostream>
#include <thread>

void test()
{
    std::cout << "test" << std::endl;
}

int main()
{
    std::thread t(test);
}

I'm compiling with the following command:

g++ -std=c++11 test.cpp -o test.exe

Now the problem is the version of MinGW one should use and I've tried about all the versions I know of.

MinGW-builds: thread-win32
MinGW-builds: thread-posix
MinGW-w64: stdthread experimental rubenvb
MinGW-w64: stdthread experimental rubenvb 4.7

Number 1 doesn't work, since GCC apparently only supports pthread stuff internally.

Number 2 does compile and it essentially even outputs test (see the last line of the output), but it also crashes with the error:

terminate called without an active exception

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
test

Number 3 and 4 again do compile, but they don't output test and instead instantly crashes, but with a more descriptive output:

terminate called after throwing an instance of 'std::system_error'
  what():  Enable multithreading to use std::thread: Operation not permitted

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

Google brought me of course to the GCC bug tracker and some other posts, that suggested to use -pthread, which doesn't help at all.

I've also tried manually linking against winpthread and pthread, but that doesn't do anything either.

There's also no difference between -std=c++11 and -std=gnu++11...

I'm really lost right now and don't know, if it's at all possible to get a MinGW version, that supports std::thread, but maybe I'm just overlooking some compiler flags. I hope someone out there can help me!

Hours spent to find a solution, finally point 2 worked! Thanks! — Massimo, Jun 16 '13 at 13:40

score 10 · Accepted Answer · answered Mar 30 '13 at 13:23

10

You forgot to join your thread:

t.join();

answered Mar 30 '13 at 13:23

Kerrek SB

464,522
92
875
1,084

2

Okay I think I'm gonna kill myself now... But why does it has to return such a cryptic error? It still doesn't work with all versions, but at least with one. Thanks! – Lukas Mar 30 '13 at 13:28
3

Destroying a joinable thread causes an exception to be thrown. Since you're not catching the exception, the program terminates. – Kerrek SB Mar 30 '13 at 13:46

score 4 · Answer 2 · answered Dec 11 '14 at 11:34

4

FYI, there is already a native win32 implementation of std::thread and sync primitives. It is a header-only library and works on any C++11 compliant version of MinGW. https://github.com/meganz/mingw-std-threads

answered Dec 11 '14 at 11:34

Alexander Vassilev

1,399
13
23

1

That's not really an answer to the already solved problem, thus a comment would've been better suited. Thanks for sharing though! – Lukas Dec 12 '14 at 10:35

MinGW and std::thread

2 Answers2

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